Fig. 5: Absorption spectra of 5, 7, 8 and 10.

UV−vis−NIR absorption spectra of 5 (black), 7 (red), 8 (blue), and 10 (green) recorded in toluene.

UV−vis−NIR absorption spectra of 5 (black), 7 (red), 8 (blue), and 10 (green) recorded in toluene.